Skull KNM-ER 1813

KNM-ER 1813, Homo habilis

Discovered by Kamoya Kimeu in 1973 at Koobi Fora in Kenya (Leakey,
1974). This specimen is similar to 1470, but is much smaller, with a
brain size of 510 cc. Estimated age is 1.8-1.9 million years.

This skull's brainsize of 510 cc is very small, smaller than the 600 cc which used
to be considered the lower limit of the genus Homo. It is probably a skull of
a female, but its teeth show that it was fully grown. It closely resembles fossils
OH 13 and OH 24 and probably belongs to the same species
as them. Most scientists now think that that it does not belong to the same species as
ER 1470, which has a differently sized and shaped face among
other differences.

Apart from its extremely small size, ER 1813 is
surprisingly modern, with a rounded skull, no sagittal crest, modest
eyebrow ridges, and a small amount of nasal prominence.

Creationists
almost totally ignore the existence of this fossil (Lubenow briefly
mentions it without describing it). However it is safe to say that
all creationists would classify it as an ape; its brain size of 510 cc
is far too small to be considered human (or so I used to think, but Line (2005)
suggests that it might be human).